One of the things that makes heart disease so problematic is the fact that after a heart attack occurs, the scar tissue that replaces the damaged heart tissue isn’t capable of expanding and contracting – it doesn’t “beat,” in other words.

The Pentagon spent millions developing a humongous hydrogen-fueled drone that, it hoped, could fly at soaring altitudes for a week at a time. Now the drone is all on its lonesome, because no one wants to buy it.

NASA has signed a new deal that will keep American astronauts flying on Russian spacecraft through early 2017 at a cost of $70.7 million per seat — about $8 million more per astronaut than the previous going rate.